23013839 has 4 divisors (see below), whose sum is σ = 23028240. Its totient is φ = 22999440.

The previous prime is 23013827. The next prime is 23013853. The reversal of 23013839 is 93831032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23013839 - 2⁸ = 23013583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4454 + ... + 8115.

It is an arithmetic number, because the mean of its divisors is an integer number (5757060).

Almost surely, 2^23013839 is an apocalyptic number.

23013839 is a deficient number, since it is larger than the sum of its proper divisors (14401).

23013839 is a wasteful number, since it uses less digits than its factorization.

23013839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14400.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 23013839 is about 4797.2741218321. The cubic root of 23013839 is about 284.4437246290.

The spelling of 23013839 in words is "twenty-three million, thirteen thousand, eight hundred thirty-nine".